Firemint doing something similar to Wii U with Real Racing 2: http://bit.ly/jedSDN
Nintendo have a habit (in recent history at least) of getting this sort of thing right. I have a feeling that bandwagons are going to be jumped left, right and centre.
Given that there's a long time left to launch (and that Nintendo might've rushed this announcement to market due to leaks), could they have something else up its sleeve? Something that copycats haven't seen coming, and that maintain a competitive advantage?

The delivery was stilted and a third of the global audience was confused by whether it was a peripheral or a brand new console. And yet, as they are wont to do, Nintendo appeared on the E3 stage in order to change the gaming world. However not to announce a key invention, as is their usual pit...